Path: utzoo!attcan!uunet!cs.utexas.edu!yale!cs.yale.edu!tarr-michael
From: tarr-michael@cs.yale.edu (michael tarr)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Timer
Keywords: THINK Pascal, fast timing of response
Message-ID: <26776@cs.yale.edu>
Date: 15 Oct 90 19:15:50 GMT
References: <13261@sdcc6.ucsd.edu>
Sender: news@cs.yale.edu
Organization: Department of Psychology, Yale University
Lines: 20
Nntp-Posting-Host: algeria.ai.cs.yale.edu
Originator: tarr@algeria.CS.Yale.Edu


Ug another psych person trying to get Millisecond accurate timing. Two
things -- for such a timer check in last years volume of Instruments,
Computers, etc... (the Blue psychonomics journal) for an article with
Doug Chute as first author on the Drexel MilliTimer. I can post the
reference if people are interested. Second, you are not really going to
get millisecond accuracy anyway using the ADB -- maybe you could with
the serial port, but I am skeptical -- better to buy an i/o board with
counter/timers on board. Or use ticks -- see a paper called "Good News
for Bad Clocks" that came out a few years ago. Again I can post the
reference if someone wants it. By the way I still don't have a way of
getting accurate ticks or screen refreshes on mac II monitors. I have
been sent several pieces of code in the past, but they don't seem to
work.

-- 
 * Mike Tarr                                    The Human Neuron Project  *
 * tarr@cs.yale.edu                             Department of Psychology  *
 * "My opinions are always my own."             Yale University           *
 **************************************************************************